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2026-08-02 - 05:41
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Sun Aug 02, 2026 01:01:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1377099220213,5cyclictest0-21swapper/1822:43:2110
1377099220213,5cyclictest0-21swapper/1822:43:2110
1377099220213,5cyclictest0-21swapper/1822:43:2110
1377699218205,11cyclictest0-21swapper/2422:00:2117
1377699218205,11cyclictest0-21swapper/2422:00:2117
1377699216210,4cyclictest0-21swapper/2421:11:2017
1377699216210,4cyclictest0-21swapper/2421:11:1917
1377099210201,5cyclictest4407-21CPU10
1377099210201,5cyclictest4407-21CPU10
1377699209202,5cyclictest0-21swapper/2400:35:2017
1377699209202,5cyclictest0-21swapper/2400:35:1917
1377699207200,5cyclictest0-21swapper/2422:09:3417
1377699207200,5cyclictest0-21swapper/2422:09:3417
1377099203196,5cyclictest0-21swapper/1823:00:5810
1377099203196,5cyclictest0-21swapper/1823:00:5810
1377099203196,5cyclictest0-21swapper/1823:00:5710
1377699202194,5cyclictest1367-21dbus-daemon21:55:2717
1377699202194,5cyclictest1367-21dbus-daemon21:55:2717
1377699201191,8cyclictest17479-21nfsd21:20:1717
1377699201191,8cyclictest17479-21nfsd21:20:1717
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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